1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bacb10f93bad68643882ba4da2d323c21f317227201118bb41857b5bd16f750. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41b131a3-1d4d-484f-bb94-baef5a6b5d87.json and https://artists.proofprofile.net/proofs/artist/41b131a3-1d4d-484f-bb94-baef5a6b5d87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Une petite musique de nuit - Pachelbel: Canon
Bach, JS: Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a59809f6ab6c2de12276be62b56cf09a7eecf3542aa1808b7616774c93a9277. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8601458.
Le nozze di Figaro, K.492 - Original version, Vienna 1786 - Act 4: Le Nozze di Figaro, K. 492 - "Contessa, perdona...Ah tutti contenti"
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Piano Concerto No. 22 in E flat, K.482: 3. Allegro - Andante cantabile - Tempo I
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Don Giovanni, K.527 / Act 2: "Don Giovanni, a cenar teco m'invitasti"
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Die Zauberflöte, K.620 / Act 2: Die Zauberflote, K. 620 - "Ach ich fuhl's"
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Requiem in D Minor, K. 626: I. Introitus. Requiem aeternam
Academy of St Martin in the Fields Chorus
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Concerto for 2 Pianos in E-Flat Major, K. 365: III. Rondo. Allegro moderato
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Amadeus (The Complete Soundtrack Recording)
Mozart For The Morning Commute - A Lively Bit Of Traveling Music
Bach for Breakfast - The Leisurely Way to Start Your Day
Sonata No.2 in E flat major, BWV 1031 - For Flute and Harp: 2. Siciliano
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Sonata No.2 in E flat major, BWV 1031 - For Flute and Harp: 1. Allegro moderato
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Sonata for Violin or Flute and Continuo, No.1 in G Minor BWV 1020 - arr. Flute, Harp, and Cello: 1. (Allegro)
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Sonata for Flute or Violin No.4 in C, BWV 1033: 1. Andante - Presto
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Sonata for Flute or Violin No.4 in C, BWV 1033: 4. Menuet I - II
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English Suite No. 3 in G minor, BWV 808 - Transcr. for two guitars A. Lagoya: 2. Allemande
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Suite in E for Lute, BWV 1006a/1000 - Arr. Harp: 3. Gavotte en rondeau
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Concerto For Violin, Oboe, And Strings In D Minor, BWV 1060 - Arr. For Panpipes From Reconstruction By Max Schneider (1875- 1967): 2. Adagio
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Oboe d'amore Concerto in A Major, BWV 1055R: I. (Allegro moderato)
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Beethoven: Piano Concerto No. 2 in B-Flat Major, Op. 19: 3. Rondo. Molto allegro (Live at Konzerthaus Berlin / 2018)
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Requiem in D Minor, K. 626: IIIa. Sequentia. Dies irae
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Requiem in D Minor, K. 626: IIIb. Sequentia. Tuba mirum
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Requiem in D Minor, K. 626: IIIc. Sequentia. Rex tremendae
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Requiem in D Minor, K. 626: IIId. Sequentia. Recordare
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Requiem in D Minor, K. 626: IIIe. Sequentia. Confutatis
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Requiem in D Minor, K. 626: IIIf. Sequentia. Lacrimosa
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Requiem in D Minor, K. 626: IVa. Offertorium. Domine Jesu
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Requiem in D Minor, K. 626: IVb. Offertorium. Hostias
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Requiem in D Minor, K. 626: VI. Benedictus
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Requiem in D Minor, K. 626: VII. Agnus Dei
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Requiem in D Minor, K. 626: VIII. Communio: Lux aeterna
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Andante for Flute and Orchestra in C, K.315
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Mozart: Sinfonia Concertante; Oboe Concerto
Mozart: Great Mass in C minor; Ave Verum Corpus
Mass in C minor, K.427 "Grosse Messe": 1. Kyrie
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Martin: Orchestral, Choral & Vocal Works.
Violin Concerto in A Minor, BWV 1041: I. Allegro
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Violin Concerto in A Minor, BWV 1041: II. Andante
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Violin Concerto in A Minor, BWV 1041: III. Allegro assai
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Violin Concerto in E Major, BWV 1042: I. Allegro
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Violin Concerto in E Major, BWV 1042: II. Adagio
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Violin Concerto in E Major, BWV 1042: III. Allegro assai
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Violin Partita No. 2 in D Minor, BWV 1004: V. Chaconne (Arr. J. Milone for Violin & Orchestra)
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Orchestral Suite No. 3 in D major, BWV 1068: II. Air
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Violin Partita No. 3 in E Major, BWV 1006: III. Gavotte en rondeau (Arr. J. Milone for Violin & Orchestra)
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The Four Seasons - Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": III. Danza pastorale. Allegro
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The Four Seasons - Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": I. Allegro non moto
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The Four Seasons - Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": II. Adagio - Presto
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The Four Seasons - Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": I. Allegro
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The Four Seasons - Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": III. Allegro
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The Four Seasons - Violin Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": III. Allegro
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Violin Sonata in G Minor "Devil's Trill"
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Orfeo ed Euridice, Wq. 30: Dance of the Blessed Spirits (Arranged for Violin & Orchestra)
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String Quartet No. 2 in D Major: III. Nocturne
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Handel: Feuerwerkmusik, Wassermusik & Concerti grossi, Op. 3
Academy of St Martin in the Fields - Vivaldi
Academy of St Martin in the Fields - Bach
Bach, J.S.: Brandenburg Concertos / Orchestral Suites / Violin Concertos
Meyerbeer: L'esule di Granata (Highlights)
Symphony No. 6 in D Major, Hob. I:6 "Le Matin": 1. Adagio - Allegro
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Violin Concerto in E Major, Op. 8, No. 1, RV 269 "La primavera": 2. Largo
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Violin Concerto in E Major, Op. 8, No. 1, RV 269 "La primavera": 3. Allegro
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Violin Concerto in F Major, Op. 8, No. 3, RV 293 "L'autunno": 1. Allegro
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Violin Concerto in F Minor, Op. 8, No. 4, RV 297 "L'inverno": 3. Allegro
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Bassoon Concerto in A Minor, RV 498 - Ed. Christopher Hogwood: 1. Allegro (ma molto moderato)
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Elgar: Piano Quintet; The Spanish Lady; La Capricieuse; Serenade Op. 20
Serenade for strings in E Minor, Op. 20: I. Allegro piacevole
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Serenade for strings in E Minor, Op. 20: II. Larghetto
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Serenade for strings in E Minor, Op. 20: III. Allegretto
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Marriner & The Academy - 20th Century Classics
Mozart: The Piano Concertos (12 CDs, Vol.7 of 45)
Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": II. Adagio un poco mosso - Live at Konzerthaus Berlin / 2018
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Mozart: Horn Concerto No. 4 in E-Flat Major, K. 495: III. Rondo. Allegro vivace
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